#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
/*
#define LENGHT 10
#define WIDTH 6
#define NEWLINE '\n'

int main()
{
	printf("Hello\tWorld\n\n");

	int area;
	area = LENGHT * WIDTH;
	
	printf("value of area :%d", area);
	printf("%c", NEWLINE);
	return 0;
}
*/

int main()
{
	const int LENGHT = 10;
	const int WIDTH = 4;
	const char NEWLINE = '\n';
	int area;

	area = LENGHT * WIDTH;

	printf("value of area: %d", area);
	printf("%c", NEWLINE);
	return 0;
}